JPH0612829Y2 - Sorter - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for selecting mixed parts having different specific gravities.

[0002]

2. Description of the Related Art Various types of automatic part selection methods are known. As the most typical selection method, there is a method in which the parts sent by a parts feeder are sorted in the process of passing through a mesh or rolled on an inclined plate having a gap. These methods are for selecting variations in the size (size) of parts, but there is also a method for selecting by utilizing the difference in specific gravity of parts. That is, when the specific gravity is 1 or less and the parts that can float on the water surface are mixed, the parts can be sorted immediately by putting them in a container filled with water. However, there are few cases where two types of mixed parts of large and small sizes are selected based on the specific gravity of 1 and it is possible in principle, but the practicality is extremely low.

[0003]

[Problems to be Solved by the Invention] It takes time to sort the size of mixed parts, and the sorting ability is not sufficient. In addition, the method of utilizing the difference in specific gravity of parts has a problem that it has a high sorting ability but lacks practicality.However, the present invention is a sorting apparatus utilizing the difference in specific gravity, and a special liquid having a specific gravity of about 3.0 or less is used. By using it, a highly practical device is provided.

[0004]

The sorting apparatus of the present invention is an apparatus utilizing the difference in specific gravity, and tetrapromethane is used as a sorting liquid. The tetrapromethane solution has a specific gravity of about 2.95, and if the alcohol is mixed if necessary, the specific gravity value can be reduced. In the sorting apparatus of the present invention, partition plates are provided in the liquid tanks, and net baskets are arranged in the respective tanks, and the tetrapromethane liquid is filled in the liquid tanks beyond the height of the partition plates. A sliding plate that moves along the liquid surface is arranged, and a cleaning liquid is put on the tetrapromethane liquid. The cleaning liquid should perform a cleaning function like water and should be a liquid having a small specific gravity without being mixed with the tetrapromethane liquid.

[0005]

When the mixed parts are sorted by using the sorting device thus constructed, the mixed parts are put into the liquid tank. In this case, the charging is performed in one of the tanks with a partition plate provided in the liquid tank as a boundary, and a part such as metal having a specific gravity larger than that of the tetrapromethane liquid sinks to the bottom. Then, a part having a specific gravity smaller than that of the tetrapromethane solution and larger than the cleaning liquid floats between both liquids, and in the case of a specific gravity smaller than the cleaning liquid, it floats on the upper surface of the cleaning liquid.

Therefore, the sliding plate is moved to move the floating parts over the partition plate into another tank, and the net basket sunk in the tank is pulled up. By pulling up the net basket in another tank, the mixed parts are separated into the net baskets. In this case, the cleaning liquid not only cleans the parts when the net basket is pulled up, but also blocks the bad odor generated by the tetrapromethane liquid. Hereinafter, embodiments according to the present invention will be described in detail with reference to the drawings.

[0007]

【Example】

FIG. 1 is a schematic sectional view showing a sorting apparatus of the present invention. In the figure, 1 is a liquid tank, 2 is a tetrapromethane solution, and 3 is water. The liquid tank 1 is provided with a partition plate 4, a net basket 6a is housed in the tank 5a and a net basket 6b is housed in another tank 5b with the partition plate 4 in between. The baskets 6a and 6b can be lifted. And
The net baskets 6a and 6b are stored in the respective tanks 5a and 5b, and the tetraprome ethane liquid 2 is filled. Therefore, the liquid level 7 of the tetraprome ethane liquid 2 is the partition plate 4 and the net basket 6a.
It is higher than 6b, the water 3 is located in the upper layer with the liquid surface 7 as a boundary, and does not mix with each other.

Here, the tetrapromethane solution 2 has a specific gravity of about 2.95, which is about 3 times that of water, and most metals are larger than the above values except for light metals such as aluminum. It has a specific gravity. On the other hand, most inorganic materials called ceramics have a specific gravity within the range of 1.5 to 3.0.

By the way, when the tetrapromethane liquid 2 having a specific gravity of 2.95 and the water 3 having a specific gravity of 1 are separated from each other with the liquid surface 7 as a boundary, if a mixed part is charged from the chute 8, a metal having a specific gravity of 2.95 or more is obtained. The part 9 sinks in the tetrapromethane solution 2 and sinks to the bottom of the net basket 6a. On the other hand, the polishing media 10 having a specific gravity of 1 or more and 2.95 or less sinks to the liquid level 7, but cannot sink in the tetrapromethane solution 2, and eventually collects on the liquid level 7. Therefore, the metal parts 9, 9 ... And the polishing media 10, 10 ... Can be completely separated.

The polishing media 10, 10 ... Separated in this way and floating on the liquid surface 7 are moved to another tank 5b by a sliding plate 11 mounted on the liquid tank 1. That is,
The sliding plate 11 is the piston rod 1 of the air cylinder 12.
If the piston rod 13 is attached to the tip of the slide plate 3, the sliding plate 11 moves along the liquid surface 7, and the polishing media 10, 10 ...

FIG. 2 shows a polishing medium 1 using a sliding plate 11.
0, 10 ... Are swept away and transferred to another tank 5b. Therefore, the polishing media 10, 10, ... Are not present in the one tank 5a. 5b in the tank in this state
If the net basket 6b stored in the net is pulled up, the polishing media 10, 10 ... Enter the net basket 6b.
The metal parts 9 are scooped up from the liquid tank 1 together with b, and the net basket 6a also stored in the tank 5a is pulled up.
9 ... is scooped up. In this case, the metal parts 9, 9 ... And the polishing media 10, 10, ... Soaked in the tetrapromethane liquid 2 are washed with water 3 when scooping. That is, the sorting apparatus of the present invention can perform the sorting function and the cleaning function at the same time. Of course, it may not be possible to obtain a sufficient effect in the above washing step, but at least 1
It is fully possible to perform the function of the next cleaning step.

By the way, both ends of the sliding plate 11 are slid by being guided by guides formed in the liquid tank 1. The air cylinder 12 as a sliding means is only one specific example as in this embodiment. Yes, for example, it may be manually slid. Further, the net baskets 6a and 6b may be pulled up by using a crane arranged above, or of course, can be relied on manually.

The application of the sorting apparatus according to the present invention will be described below. The sorting apparatus can immediately select a large number of mixed parts and simultaneously wash them by utilizing the difference in specific gravity of the mixed parts. . Examples of such selection of a large amount of mixed parts include an abrasive to be barrel-polished and a material to be polished.

Here, the metal part 9 is a material to be polished, and the polishing medium 10 is a polishing material. In many cases, the polishing medium 10 made of ceramic is used as the polishing material, and the parts having a specific gravity of 1 or more and 2.95 or less immediately float on the liquid surface 7 and are separated. Of course, if a chip with a specific gravity of 1 or less is used without using ceramics as an abrasive, it can float on the water surface without sinking in water, so sorting using this sorting device is also possible. Is. However, diamond or Al ₂ O as abrasives
₃ , Not applicable when using an inorganic material with a specific gravity of 2.95 or more, such as SiC.

As described above, in the sorting apparatus of the present invention, the liquid tanks are partitioned by the partition plates to store the net baskets in the respective tanks, and the tetraprome ethane liquid and the cleaning liquid having a specific gravity of about 1 are put in the liquid tanks. By providing a sliding plate that slides along the surface of the tetrapromethane solution, the following effects can be obtained.

[0016]

[Effects of the Invention] The sorting device of the present invention puts a tetrapromethane solution and a cleaning solution in a liquid tank and sorts by utilizing the difference in specific gravity of the mixed parts. The sorting capacity is 100%. Especially the specific gravity
The 2.95 tetrapromethane solution is smaller than the specific gravity of the metal,
Since the specific gravity of the ceramic is larger than that of the ceramic, the ceramic abrasive used for barrel polishing and the metal part to be polished can be efficiently selected. Moreover, since the device of the present invention puts washing water such as water on the liquid surface of the tetrapromethane liquid, parts soaked in the tetrapromethane liquid can be simultaneously washed in the process of being scooped up from the liquid tank. Done. Further, the cleaning liquid suppresses the bad odor generated from the tetrapromethane liquid and contributes to the improvement of the working environment.

[Brief description of drawings]

FIG. 1 is an embodiment of a sorting apparatus according to the present invention.

FIG. 2 shows a case where the sliding plate is moved in the embodiment of the sorting apparatus according to the present invention.

[Explanation of symbols]

 1 Liquid Tank 2 Tetrapromethane Liquid 3 Water 4 Partition Plate 5 Inside Tank 6 Net Basket 7 Liquid Level 8 Chute 9 Metal Parts 10 Polishing Media 11 Sliding Plate 12 Air Cylinder 13 Piston Rod

Claims (1)

[Scope of utility model registration request] 1. A partition plate is provided in a liquid tank, and a net basket is housed in each tank with the partition plate in between so that the net basket can be lifted freely. About 2.
95 Tetrapromethane liquid is put in, and the liquid surface is filled with a cleaning liquid having a specific gravity of about 1 such as water, and the liquid tank is slid along the liquid surface of the tetrapromethane liquid. A sorting device having a moving plate.